Hennessy's whp to crank hp conversion is crazy. I think he had a SRT dyno in the low 520's and he's calling it HPE650 package. I posted a comment telling him that it made six whp more then my bone stock 2011 GT500 made which was advertised at 550 crank. Of course he didn't allow it to be posted on his youtube page. Now he stopped posting the dyno numbers all together. :nonono: